Service Manual

11-1Power Max Service Manual

Power Max models have 3 very simple electrical

systems. Each is separate from the other so a problem

in one area will not affect the others.

The wires run from the ignition coil, under the blower

housing, over the foam pad to the ignition switch. The

other wire runs from the switch to the cylinder head bolt.

Make sure to secure the wires to the primer line with a

wire tie (Fig. 229).

Fig 229 MVC-864X

To test the switch remove the wires and attach a

continuity light or ohmmeter. When the switch is on there

should be no continuity. When the switch is off there

should be continuity between the terminals (Fig. 230).

Fig 230 MVC-192

ELECTRICAL

ELECTRIC START SYSTEM

All models have an electric start system standard. All

4 cycle engines use the Tecumseh electric start system.

See the Tecumseh service manual for repair information.

The 2 cycle models have a Toro system. The 2 Cycle

electric start is covered in the E Engine Service Manual

Form # 492-0647.

LIGHTING

Some 4 cycle models have a light standard or light kit

available. There is no light kit for 2 cycle models.

The lighting system consists of an alternator coil, a wire

leading to the light ﬁ xture and the ﬁ xture itself. This

light operates whenever the engine is running. The

alternator is a Tecumseh part; replacement parts and

troubleshooting assistance are obtained through the

Tecumseh system.

The light ﬁ xture and the wire harness are Toro parts. The

light bulb is replaceable.

IGNITION SWITCH

All models have an on/off switch.

On the 4 cycle models the switch is an engine part and

is built into the carburetor heater box, next to the throttle.

Use Tecumseh service information for troubleshooting

and repair.

The 2 cycle models have a simple on/off switch mounted

in the rear engine cover. When the key is turned off, the

switch closes, the magneto primary is grounded to the

engine block and the engine stops. When turned to on,

the ground is disconnected allowing the ignition to ﬁ re.

See the engine section for access to the ignition switch

on 2 cycle models.